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Word Problems Using Systems of Equations

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Regla de Tres Simple (en Español)
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La regla de tres es una versión abreviada de una forma particular de la multiplicación de la cruz, a menudo enseña a los estudiantes de memoria. El profesor da un ejemplo y encuentra la solución del problema, mientras que enseña dos diferentes manera... [more]
February 4, 2012 at 02:16 PM
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